Title:
IMPREGNATED DRILL BITS WITH INTEGRATED REAMERS
Document Type and Number:
WIPO Patent Application WO/2012/036849
Kind Code:
A3
Abstract:
Drilling tools include a bit crown and an integrated reamer. The bit crown and the integrated reamer can be configured with approximately equal drilling lives. The bit crown can be impregnated with abrasive cutting media and include one or more external flutes. The integrated reamer can be positioned at the base the bit crown and include one or more channels that align with one or more of the outer flutes. The channels can taper such that they increase in width as they extend away from the bit crown.
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Inventors:
PEARCE CODY A (US)
LAMBERT CHRISTIAN M (US)
RUPP MICHAEL D (US)
LAMBERT CHRISTIAN M (US)
RUPP MICHAEL D (US)
Application Number:
PCT/US2011/048682
Publication Date:
June 28, 2012
Filing Date:
August 22, 2011
Export Citation:
Assignee:
LONGYEAR TM INC (US)
PEARCE CODY A (US)
LAMBERT CHRISTIAN M (US)
RUPP MICHAEL D (US)
PEARCE CODY A (US)
LAMBERT CHRISTIAN M (US)
RUPP MICHAEL D (US)
International Classes:
E21B10/02; E21B10/26; E21B10/48
Foreign References:
| US20070119625A1 | 2007-05-31 | |||
| US20060162967A1 | 2006-07-27 | |||
| US20080135306A1 | 2008-06-12 | |||
| US20040188149A1 | 2004-09-30 |
Other References:
See also references of EP 2616624A4
Attorney, Agent or Firm:
BALLARD, Michael M. et al. (1000 Eagle Gate Tower60 East South Templ, Salt Lake City UT, US)
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